MALICIOUS
124
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF contains numerous embedded URLs, many of which are hosted on seemingly legitimate domains but point to suspicious PDF files. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a pattern of using many distinct hosts for a large number of links, suggesting an attempt to obscure malicious destinations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.8464
Heuristics 4
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://ambrose.edu/sites/default/files/webform/lajeriz.pdf
- https://ambrose.edu/sites/default/files/webform/71048230710.pdf
- http://cicatsalud.com/html/sites/default/files/webform/39809543560.pdf
- http://cicatsalud.com/html/sites/default/files/webform/19824170549.pdf
- http://klm3fg.grhosting.cz/sites/default/files/webform/files/mimixinaxeralowevowijut.pdf
- https://www.osgeurope.com/sites/osg-corporate.dev/files/webform/bedadijone.pdf
- https://www.visitsavannah.com/sites/default/files/webform/fukixuliwidopisoduzurapi.pdf
- https://www.woonsocketri.org/system/temporary/webform/bogobovimefegaf.pdf
- https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/22559513310.pdf
- https://www.a1touchsolution.nl/sites/default/files/wozupidojenebimovom.pdf
- https://www.uts.cw/sites/default/files/webform/vogoledifekotukedadawen.pdf
- http://www.muttypawsacademy.com/sites/default/files/webform/vaccines/72246142748.pdf
- https://aboss.by/sites/default/files/webform/pibodanagulevegomenet.pdf
- https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/bekam.pdf
- https://ambrose.edu/sites/default/files/webform/rebunedirewe.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/skout/mBVl/~3/DOqCt-cVA4I/uplcv?utm_term=grasshopper+for+rhino+5+tutorial+pdf
- https://printandmail.princeton.edu/system/files/webform/31356988355.pdf
- https://ec.europa.eu/eip/agriculture/sites/default/files/webform/77241298986.pdf
- https://ubmemeaensoprod.s3.amazonaws.com/ifsec_international/call_for_papers/2021/03/52983615418.pdf
- http://scripts.sil.org/OFL
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000cf55.bin004d853a334e5d77eb68991e26a47bd5e26c5d6d18133ace1afe286442cffe87 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF55 | 5284 bytes |
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